Pipe wrench



Patented Apr. 10, 1923.

ERNEST AARON PETERSON,

or OAKLAND, CALIFORNIA.

PIPE WRENCH.

Application led February 9, 1922. Serial No. 535,234.

To all whom t may concern:

Be it known that I, ERNEST AARON Pn'rnnsoN, a citizen of the United States, residing at Oakland, in the county of Alameda and State of California, have invented certain new and useful Improvements in Pipe Wrenches, of which thefollowing is a speciication. j

M invention is an improved pipe wrench of simple and durable construction, which may be easily and quickly adjusted or released.

Referring to the annexed drawing in which my invention is illustrated and which forms a part of this specication:

Figure 1 is a side view of my wrench.

Figure 2 is a front edge view of my wrench. f

Figure 3 is a longitudinal section of the slide.

In the drawing 1 indicates a shank; 2 a fixed jaw at one end of said shank; and 3 a handle at the other end of said shank. The jaw 2 has a concaved toothed engaging surface 4. A slide 5 is slidably mounted on the shank 1, which slide includes a pair of side walls 6 and 7 which fit against the sides of said shank, a rear wall 8 which is located adjacent the back edge of said shank, and a block 9 which lits between the lower portion of said vside walls adjacent the front edge of said shank and is secured to said side walls by rivets 10 and 11, the rivet 10 being larger than the rivet 11 and extending through the block near its rear and upper edges and the rivet 11 extending through f the block near its lower forward corner. From the inner edge of the block 9 near its lower edge projects a stud 12 for engaging sockets 13, 14,15 and 16 respectively in the shank l, and the back wall 8 of the slide 5 is inclined backwardly from the upper to the lower edge of the slide, so that the slide may be swung forwardly from the pivot point where the wall 8 engages the back of the shank 1 to disengage the stud 12 from any of said sockets, whereby the slide is released and allowed to be moved along the shank. A flat spring 17 vis secured at its upper end to the upper part of the inside of the slide rear wall`8 and its lower part engages the back of the shank 1 and normally holds the slide with its stud 12 in engagement with one of the sockets 13, 14, 15 or 16, whereby the slide is detachably held lin different positions on the shank.

A jaw 20 is pivoted between the upper forward corners of the slide side walls 5 and 6 by a pivot 21 which extends through said jaw and said side walls at said corners.

. Said jaw has a convexed toothed engaging surface 22 which cooperates with the concave toothed engaging surface 4 of jaw 2 in gripping a pipe. The jaw 20 may be swung on its pivot 21 into different positions to engage the pipe in. conjunction with the jaw 2.

Having described my invention, I claim: Apipe wrench including a shank, a fixed jaw on one end of said shank formed with a concaved toothed engaging surface, a handle on the other end of said shank, said shank having a plurality of sockets along its forward` edge, a slide on said shank, a stud on said slide for engaging any of said sockets, the rear wall of said slide inclining from the back edge of said shank opposite said stud so that said slide may be swung to cause said stud 13o-engage or disengage any of said sockets, a spring between said back wall of said slide and the back edge of said shank for normally lholding said stud in one of said sockets, and a jaw pivoted in said slide formed with a convexed tooth engaging surface cooperating with the concaved'toothed engaging surface of said fixed jaw.

In testimony whereof I aflix my signature. 

